The visible emission peaks in the PL spectra of undoped ZnO are attributed to different native defects, whereas in Dy-doped ZnO nanoparticles, the visible emissions (blue, yellow and red) are...

2021年1月1日 · For the ZnO study, it can be shown that there are two degradation mass loss measures in the temperature ranges of 300–600 K and 600–1263 K respectively in the TG curve. The first weight loss was ∼ 10 percent of the attributes of evaporation of surface water adsorbed while the second weight loss steadily decreased could be due to the ...

2021年9月5日 · Zinc oxide (ZnO) nanoparticles (NPs) are gaining more interest due to their multifunctional and biological properties. Herein, we synthesized ZnO NPs and characterized their optical and electrical properties for application in catalysis and optoelectronic devices and potential biomedical applications.

2023年8月1日 · ZnO/ZnS photocatalyst was successfully fabricated by a thermal oxidation of hydrothermally grown ZnS in the air. The enhanced photoactivity toward degradation of azo dyes and fluoroquinolone antibiotics was obtained. The degradation of the pollutants followed the first-order kinetic model.

TGA and DTA curves of ZnO nanoparticles. In this study, we describe a green and simple procedure for biosynthesis of ZnO nanoparticles using Candida albicans as eco-friendly reducing and...

2014年2月6日 · ZnO nanoparticles are prepared through hydrolysis and condensation of zinc acetate dihydrate by potassium hydroxide in alcoholic medium at low temperatures. Thermal gravimetric analysis (TGA) of the precursor is made in order to specify the temperature range over which the weight loss and thermal effect are significant.

Nanocomposites of ZnO and some selected polymers, namely, poly (ethylene glycol), poly (vinylpyrrolidone), and polyacrylonitrile, were synthesized and characterized using Fourier transform...

2015年5月4日 · The TGA thermogram for ZnO precursor (Z 1) is shown in Figure 1. It should be noted that the observed TGA data of Z 1 show that the weight loss proceeds in successive stages with increasing temperature. The first step is in the range of 50°C to about 190°C, demonstrating the dehydration of surface-adsorbed water.

本文采用阴极恒电流电沉积法制 备 ZnO, 研究 了不同条件对产物的结构和组成的影响 . 而有关沉积物组成 与反应条件的关系的研究尚未见报道 . 研究结果对于进一步 认识产物与反应条件之间的关系具有积极的意义 . 高 (从 45 ℃到 65 ℃)而增加 ,说明 ZnO 的结晶度在 ...

2019年12月1日 · The thermal properties of the prepared ZnO nanoparticles are examined employing thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The temperature of samples is increased from room temperature at a heating rate of 10 °C/min in an aluminum pan until the temperature reaches 600 °C.